Control system

Details Control system Control system

1994-05-24

1997-01-21

Tanner, Harry B.

Automatic temperature and humidity regulation

Distance-adjusted

340539, G05D 2300

Patent

active

055953425

ABSTRACT:
A boiler control system includes a room temperature sensor 10 which utilises radio transmission to send temperature information via antenna 11 to receiver 15 via antenna 16. The receiver will provide an output to a control unit 18 to cause actuation of the boiler 19 for example if the room temperature falls below a preset value. The temperature selected can be varied by means of up/down keys 13/14 on the sensor 10. Temperature information can be displayed by means of display 12. Unique coding identifies the transmitting sensor and transmission can be sequenced on a number of frequencies to reduce the risk of reception failure. Additional temperature sensors including a hand held unit each with a unique identity code can be used and transmission time is varied to avoid coincident transmission from the sensors. Telephone linkage for a number of devices can be provided.

REFERENCES:
patent: 4734680 (1988-03-01), Gehman et al.
patent: 5114070 (1992-05-01), Lilja et al.
patent: 5224648 (1993-07-01), Simon et al.
patent: 5318224 (1994-06-01), Darby et al.
patent: 5390206 (1995-02-01), Rein et al.

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